First impressions: Shimano XT Di2 M8200

When Shimano made its return to electronic shifting, it didn’t just dip a toe. It jumped in with three complete new mountain bike groups (and another gravel option, to boot). We had the chance to spend months riding the ultra-high end XTR M9200 Di2 group and, as you’d expect from the XTR name, it sets a new standard in electronic shifting for mountain bikes. But XTR is rarefied air. Most of us are far more likely to end up riding XT or Deore groups. So we were keen to get time on the new Deore XT Di2 when the opportunity presented itself.

XT is, like XTR, more than just a derailleur. The release includes a welcome return to sub-$1,000 alloy wheels for Shimano and brakes. There’s also a new 9-45 cassette as an option to the standard 10-51, which we have a lot to say about.  Here’s our first impressions of Deore XT Di2 M8200.

Shimano XT Di2 M8200: The basics

We covered the new Deore XT Di2 group in detail when it was released, but here’s a quick refresher. Like XTR, the Deore XT drivetrain is now fully wireless. That includes electronic wireless rear derailleur, shifter and an updated cassette.

Shimano is sticking with a standard derailleur mount (it is UDH compatible, to be clear) but introduces a new “automatic impact recovery” function to help XT stand out from the competition. This lets the derailleur internals disengage when it hits anything – a rock, a root, the ground in a crash – and then automatically return to the same position on the cassette. No crash mode. No stopping to reset your derailleur position. Just keep pedalling.

Despite all the new features, XT Di2 M8200 is backward- and cross-compatible with any Shimano 12-speed HG+ group. Shimano’s offering “upgrade kits” that include just the derailleur and shifter, which you can drop into your existing XT (or XTR or Deore or LX) mechanical group to ditch the cables.

There are updated cassettes, including the completely new 9-45 option, as well as new cranks and chainrings. These follow the lead and design of XTR but a little less complex and a little heavier.

Beyond the derailleur

This XT release also includes a major overhaul of Shimano’s brakes, following the lead of XTR. There’s also a $750 alloy trail wheelset, which diverges quite a bit from the bougie big brothers lead, in a good way.

Shimano offers the XT brakes in the new trail lever only, but with thee calliper options (2-piston, 4-piston, 2-piston flat mount) to tune the system for cross country,…